Abstract
A significant modification of the mechanical behaviour of cement composites is brought about by fibre reinforcement. The most important feature is crack bridging by fibres. This leads to pseudo strain-hardening in SHCC. The important feature to be considered for durability design of SHCC, which is the focus in this report, is the crack-control exhibited by this class of materials in the strain-hardening phase. The crack control in SHCC subjected to mechanical actions leading to direct tension, but also shear and compression is described here. Short term monotonic actions, long-term actions as well as cyclic actions are discussed. Another mechanical degradation process, namely that of abrasion is described. Finally, self-healing of SHCC is discussed as a promising durability feature of degradation reversal.
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van Zijl, G.P. (2011). Durability under Mechanical Load – Micro-crack Formation (Ductility). In: Wittmann, F., Van Zijl, G. (eds) Durability of Strain-Hardening Fibre-Reinforced Cement-Based Composites (SHCC). RILEM State of the Art Reports, vol 4. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0338-4_2
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